diff options
| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-06-03 21:25:54 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-04 14:01:06 +0400 |
| commit | ab530e1f781da4d704892daab2bdd568f473687d (patch) | |
| tree | 38fd2364225dd8ba8051c77df25457cdaa96833f /arch/x86 | |
| parent | f19dc2f22a180dde3f9e611b76c73f5390c11ecd (diff) | |
| download | linux-ab530e1f781da4d704892daab2bdd568f473687d.tar.xz | |
x86: early check if a system is numaq
so we could fall back to one node numa.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/mpparse.c | 14 | ||||
| -rw-r--r-- | arch/x86/kernel/numaq_32.c | 24 |
2 files changed, 30 insertions, 8 deletions
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c index 8898aa49079d..b4a950da2f97 100644 --- a/arch/x86/kernel/mpparse.c +++ b/arch/x86/kernel/mpparse.c @@ -70,7 +70,10 @@ static void __cpuinit MP_processor_info(struct mpc_config_processor *m) return; } #ifdef CONFIG_X86_NUMAQ - apicid = mpc_apic_id(m, translation_table[mpc_record]); + if (found_numaq) + apicid = mpc_apic_id(m, translation_table[mpc_record]); + else + apicid = m->mpc_apicid; #else apicid = m->mpc_apicid; #endif @@ -91,7 +94,8 @@ static void __init MP_bus_info(struct mpc_config_bus *m) str[6] = 0; #ifdef CONFIG_X86_NUMAQ - mpc_oem_bus_info(m, str, translation_table[mpc_record]); + if (found_numaq) + mpc_oem_bus_info(m, str, translation_table[mpc_record]); #else printk(KERN_INFO "Bus #%d is %s\n", m->mpc_busid, str); #endif @@ -112,7 +116,8 @@ static void __init MP_bus_info(struct mpc_config_bus *m) #endif } else if (strncmp(str, BUSTYPE_PCI, sizeof(BUSTYPE_PCI) - 1) == 0) { #ifdef CONFIG_X86_NUMAQ - mpc_oem_pci_bus(m, translation_table[mpc_record]); + if (found_numaq) + mpc_oem_pci_bus(m, translation_table[mpc_record]); #endif clear_bit(m->mpc_busid, mp_bus_not_pci); #if defined(CONFIG_EISA) || defined (CONFIG_MCA) @@ -321,6 +326,9 @@ static inline void mps_oem_check(struct mp_config_table *mpc, char *oem, { if (strncmp(oem, "IBM NUMA", 8)) printk("Warning! May not be a NUMA-Q system!\n"); + else + found_numaq = 1; + if (mpc->mpc_oemptr) smp_read_mpc_oem((struct mp_config_oemtable *)mpc->mpc_oemptr, mpc->mpc_oemsize); diff --git a/arch/x86/kernel/numaq_32.c b/arch/x86/kernel/numaq_32.c index e65281b1634b..922be66668b8 100644 --- a/arch/x86/kernel/numaq_32.c +++ b/arch/x86/kernel/numaq_32.c @@ -31,9 +31,12 @@ #include <asm/numaq.h> #include <asm/topology.h> #include <asm/processor.h> +#include <asm/mpspec.h> #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT)) +int found_numaq; + /* * Function: smp_dump_qct() * @@ -67,13 +70,24 @@ static void __init smp_dump_qct(void) } } -/* - * Unlike Summit, we don't really care to let the NUMA-Q - * fall back to flat mode. Don't compile for NUMA-Q - * unless you really need it! - */ +static __init void early_check_numaq(void) +{ + /* + * Find possible boot-time SMP configuration: + */ + early_find_smp_config(); + /* + * get boot-time SMP configuration: + */ + if (smp_found_config) + early_get_smp_config(); +} + int __init get_memcfg_numaq(void) { + early_check_numaq(); + if (!found_numaq) + return 0; smp_dump_qct(); return 1; } |